Year	% of GDP
1971	0.05008946232761978
1972	0.04656969920896255
1973	0.05043258533730261
1974	0.42220470825930506
1975	1.6000509140400352
1976	1.6462598869045875
1977	1.6263994381791842
1978	1.5251893657142144
1979	1.2687708977898153
1980	1.732748438707721
1981	3.0047179860250535
1982	3.4896796418196234
1983	1.8941154035130043
1984	1.3653294866239485
1985	1.5349061330838885
1986	0.7682619425372815
1987	0.08677041631996517
1989	0.43697164306578745
1990	0.6067302145840342
1991	0.5020201116530363
1992	0.32369002057622687
1993	0.12159611258320938
1994	0.06556137992806044
1995	0.1834054338002372
1996	0.08788444100400113
1997	0.06456783597226087
1998	0.08618434659394822
1999	0.04824036547718802
2000	0.0897857197147414
2001	0.40166957346909327
2002	0.15803648359148573
2003	0.13214815038603253
2004	1.1672313293245125
2005	0.853053380908294
2006	0.8371340984311549
2007	0.9487768857802005
2008	2.3881037602739648
2009	0.9320853713905524
2010	1.454367596414267
2011	1.8644413984591313
2012	0.9866154347265922
2013	0.6113055564800266
2014	0.47710792582923284
2015	0.2883460979082256
2016	0.30573127514593645
2017	0.3937603762253538
2018	0.4363835021415751
2019	0.3392464755804614
2020	0.27828922020414987
2021	0.47980549319048615